inDeX of refraction of Water

This table gives the index of refraction of liquid water at atmo-

spheric pressure, relative to a vacuum, at several temperatures and

wavelengths . It is generated from the formulation in Reference 1,

which covers a wide range of temperature, pressure, and wave-

length . The wavelengths listed here correspond to prominent lines

of cadmium (226 .50 and 361 .05 nm), potassium (404 .41 nm), so-

dium (589 .00 nm), Ne (632 .80 nm, from a helium - neon laser), and

mercury (1 .01398 µm) .

references

1 . Schiebener, P ., Straub, J ., Levelt Sengers, J . M . H ., and Gallagher, J . S .,

J. Phys. Chem. Ref. Data, 19, 677, 1990; 19, 1617, 1990 .

2 . Marsh, K . N ., Editor, Recommended Reference Materials for the

Realization of Physicochemical Properties, Blackwell Scientific

Publications, Oxford, 1987 .

t/°C

226.50 nm

361.05 nm

404.41 nm

589.00 nm

632.80 nm

1.01398 µm

0

1 .39450

1 .34896

1 .34415

1 .33432

1 .33306

1 .32612

10

1 .39422

1 .34870

1 .34389

1 .33408

1 .33282

1 .32591

20

1 .39336

1 .34795

1 .34315

1 .33336

1 .33211

1 .32524

30

1 .39208

1 .34682

1 .34205

1 .33230

1 .33105

1 .32424

40

1 .39046

1 .34540

1 .34065

1 .33095

1 .32972

1 .32296

50

1 .38854

1 .34373

1 .33901

1 .32937

1 .32814

1 .32145

60

1 .38636

1 .34184

1 .33714

1 .32757

1 .32636

1 .31974

70

1 .38395

1 .33974

1 .33508

1 .32559

1 .32438

1 .31784

80

1 .38132

1 .33746

1 .33284

1 .32342

1 .32223

1 .31576

90

1 .37849

1 .33501

1 .33042

1 .32109

1 .31991

1 .31353

100

1 .37547

1 .33239

1 .32784

1 .31861

1 .31744

1 .31114

10-251

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